The COX (ovine/human) Inhibitor Screening Assay directly measures PGF2α produced by SnCl2 reduction of COX-derived PGH2. The prostanoid product is quantified via ELISA using a broadly specific antibody that binds to all the major PG compounds. Thus, the Cayman COX Assay is more accurate and…

Cayman’s PGD2-MOX Express ELISA is a competitive assay that permits the rapid measurement of PGD2 from biological samples, requiring only 1 hour incubation and development times for each step. The methodology for the assay is the same as that employed in the PGD2-MOX ELISA (Item No. 512011).…

COX-1 and COX-2 catalyze the production of the prostaglandin (PG), thromboxane, and prostacyclin precursor PGH₂. COX-2 is responsible for the biosynthesis of PGs under acute inflammatory conditions. This inducible COX-2 is believed to be the target enzyme for the anti-inflammatory…

Cayman’s PGE2 Express ELISA is a competitive assay that permits the rapid measurement of PGE2 from biological samples, requiring only 1 hour incubation and development times for each step. The foundation of the assay is Cayman’s high-affinity, well-characterized PGE2 monoclonal, the…

Cayman’s PGE2 ELISA is a sensitive competitive assay that uses a high-affinity PGE2 monoclonal antibody for quantification of PGE2 in plasma, urine, and culture media samples.

Cayman’s PLA2 ELISA Kit is an immunometric (i.e. "sandwich") assay that can be used for the quantification of sPLA2 in plasma, synovial fluid, and other sample matrices. Each kit contains AChE:s PLA2 antibody conjugate, antiserum, human recombinant sPLA2 standard, Ellman’s…

15(S)-HETE is produced from arachidonic acid by the enzyme 15-LO. In humans it is formed primarily in the respiratory epithelium, leukocytes, and reticulocytes. It may contribute to allergic rhinitis, has anti-inflammatory properties, and acts as a vasoconstrictor. Cayman’s 15(S)-HETE ELISA…

COX-1 and COX-2 catalyze the production of the PG and TX precursor PGH2. COX-2 is primarily responsible for the biosynthesis of PGs under acute inflammatory conditions. The COX-1 (ovine) Inhibitor Screening Assay measures PGF2α that is produced by SnCl2 reduction of COX-1-derived PGH2.…

The COX (ovine) Inhibitor Screening Assay directly measures PGF2α produced in the cyclooxygenase reaction. The prostanoid product is quantified via ELISA using a broadly specific antibody that binds to all the major prostaglandin compounds. Thus, this Cayman COX Assay is more accurate and…

Prostacyclin is formed from arachidonic acid primarily by the vascular endothelium and renal cortex. It is a potent vasodilator and inhibitor of platelet aggregation. PGI2 is non-enzymatically hydrated to 6-keto PGF1α (t½ = 2-3 minutes), and then quickly converted to the major…

COX-1 and COX-2 catalyze the production of the PG and TX precursor PGH2. COX-2 is primarily responsible for the biosynthesis of PGs under acute inflammatory conditions. The COX-2 (human recombinant) Inhibitor Screening Assay measures PGF2α that is produced by SnCl2 reduction of COX-2-derived…

The isoprostanes are a family of eicosanoids of non-enzymatic origin produced by the random oxidation of tissue phospholipids by oxygen radicals. Isoprostanes appear as artifacts in tissue and plasma samples which have undergone oxidative degradation during prolonged or improper storage. They also…

Fluprostenol is a metabolically stable analog of PGF2α with potent FP receptor agonist activity. The isopropyl ester of fluprostenol has been approved for use as an ocular hypotensive drug for the treatment of glaucoma and is sold under the Alcon trade name Travoprost. Acting as a prodrug,…

Cayman’s STAT-8-isoprostane ELISA is a competitive assay that permits the rapid measurement of 8-iso PGF2α from biological samples, requiring only 1 hour incubation and development times for each step. This assay format is similar to that employed in Cayman’s original…

The measurement of TG levels, in conjunction with other lipid assays, are useful in the diagnosis of primary and secondary hyperlipoproteinemia, dyslipidemia, and triglyceridemia. Cayman’s TG Assay provides a simple, reproducible, and sensitive tool for assaying TGs in plasma, serum, cell…

Leukotrienes (LTs) are a group of acute inflammatory mediators derived from arachidonic acid via the 5-lipoxygenase (5-LO) pathway in leukocytes. LTC4, LTD4, and LTE4 are collectively referred to as cysteinyl leukotrienes (CysLTs). LTC4 and LTD4 are potent mediators of asthma and hypersensitivity.…

tetranor-PGDM is a major metabolite of PGD2 found in human and murine urine. Normal levels of tetranor-PGDM in human and murine urine are 1.5 ng/mg creatinine and 8.1 ng/mg creatinine respectively. Cayman’s tetranor-PGDM ELISA is a competitive assay that can be used for quantification of…

Because of the rapid metabolism of PGE2, the determination of in vivo PGE2 biosynthesis is often best accomplished by the measurement of PGE2 metabolites. Cayman’s PGEM Assay converts all 13,14-dihydro-15-keto PGE2 and 13,14-dihydro-15-keto PGA2 into a single stable derivative, which is…

Latanoprost is an F-series PG analog which has been approved for use as an ocular hypotensive drug. PG esters and other similar derivatives act as prodrugs which are converted to the active free acid form by an esterase/amidase activity in ocular tissues. The free acid form of Latanoprost is 200…

17-phenyl trinor PGF2α is a metabolically stable analog of PGF2α and is a potent agonist for the FP receptor. The ethyl amide analog has been approved for use as an ocular hypotensive drug, sold under the Allergan trade name Bimatoprost. There is some evidence that unmetabolized…

Prostaglandin D2 (PGD2) is biosynthesized in the brain by a soluble, 26 kDa glutathione-independent lipocalin-type PGD2 synthase. This PGD2 accumulates in the cerebrospinal fluid (CSF), where it induces physiologic sleep in rats and humans. PGD2 is also synthesized in mast cells and leukocytes by a…

Cayman’s Lipid Hydroperoxide Assay measures the hydroperoxides directly utilizing the redox reactions with ferrous ions. An easy to use quantitative extraction method was developed to extract lipid hydroperoxides into chloroform, and the extract is directly used in the assay. This procedure…

This assay offers the convenience of a fast assay (2 hour incubation; 1 hour development) while still achieving a detection limit (80% B/B0) of 10 pg/ml.

Cyclooxygenase (COX, also called Prostaglandin H Synthase or PGHS) is a bifunctional enzyme that converts arachidonic acid to a hydroperoxy endoperoxide (PGG₂) and reduces the endoperoxide to the corresponding alcohol (PGH₂), the precursor of prostaglandins, thromboxanes, and…

Mammalian sEH is a member of the α/β-hydrolase fold family of enzymes that catalyze the hydrolysis of exogenous and endogenous epoxides to vicinal diols. Endogenous substrates for sEH include EETs which exhibit vasodilatory and anti-inflammatory activity. Cayman’s sEH Cell-Based…

Sphingomyelin is an important lipid component of cell membranes and lipoproteins. Cayman’s SM Assay provides a specific, sensitive, and convenient method for quantifying SM in plasma or serum in a 96-well format with a colorimetric readout at 595 nm.

This kit contains all reagents necessary for simple one-step purification of 8-isoprostane from most biological samples.

Arachidonoyl thio-PC is a substrate for cPLA2 by virtue of the presence of arachidonic acid at the sn-2 position of the glycerophospholipid. Hydrolysis of the arachidonoyl thioester bond at the sn-2 position by PLA2 releases free thiol which can be detected by DTNB. This assay can be used to…

Leukotriene E4 (LTE4) is a product of the 5-lipoxygenase (5-LO) pathway in activated mast cells, eosinophils, and monocytes. LTA4, the primary 5-LO metabolite, is rapidly converted to LTC4 and sequentially to LTD4 and LTE4. While plasma levels of LTC4 are virtually undetectable, exogenously…

The EP4 receptor is one of four GPCRs that mediate the actions of prostaglandin E2 (PGE2). The diverse effects of PGE2 acting via EP4 receptors point to the need to identify novel agonists and antagonists, both to further elucidate the function of this receptor subtype and for use as therapeutics…

The EP2 receptor is one of four GPCRs that mediate the actions of PGE2. The diverse effects of PGE2 acting via EP2 receptors point to the need to identify novel agonists and antagonists, both to further elucidate the function of this receptor subtype and for use as therapeutics for various…

PGF2α is rapidly metabolized to 13,14-dihydro-15-keto PGF2α in vivo, by the enzymes 15-hydroxy PG dehydrogenase and D13-reductase. Measurement of 13,14-dihydro-15-keto PGF2α in plasma can be used as a marker of the in vivo production of PGF2α. The Cayman’s…